Hi!

I've got a flat C128 with a 6581R4 and it has a terrible noise in the C128 mode. If I switch in C64 with GO64 it is still present, but after pressing RUN/STOP-RESTORE it is gone. If I activate the C64 by holding the commodore key it is gone from the beginning. By the way, if I've got JiffyDOS activated this function isn't working, only when using the normal DOS. Crazy machine...

Ever heard about a noise in C128 mode only? There should be a way by soldering a diode between GND and ExtIn, but I bent the ExtIn pin of the SID away from the socket, the noise is still there.

Hi guys!

Here's a detection routine that checks for C128, C128 in 64 mode, real C64, display mode and Caps Lock status (it's ASCII/DIN on my kb).

10 PRINT CHR$(147):GOSUB 60010
20 PRINT "COMPUTER: ";CP$(1)
30 PRINT" DISPLAY: ";CP$(2)
40 PRINT"CAPS LOCK: "CP$(3)
59999 END

60000 REM *** SYSTEM DETECTION ***
60010 CP$(1)="C64":CP$(2)="40 CHARS":CP$(3)="OFF"
60020 CP=PEEK(65534):IF CP=23 THEN CP$(1)="C128":GOTO 60060
60030 POKE53296,204:IF PEEK(53296)=252 THEN PRINT"C128 IN 64 MODE"
60040 CP$(3)="UNKNOWN":IF CP$(1)="C64" THEN CP$(3)="N/A"
60050 RETURN
60060 IFPEEK(215)=128 THEN CP$(2)="80 CHARS"
60070 IFPEEK(211) AND 16 = 16 THEN CPS$(3)="ON"
60080 RETURN

BTW: Does the Preview function not work in Safari?